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DOI: 10.1055/s-2007-963263
© Georg Thieme Verlag KG Stuttgart · New York
Kombinierte radiologische und nuklearmedizinische Bildgebung in Tierexperimenten: Ein Überblick über die aktuellen Möglichkeiten
Combination of Radiological And Nuclear Medical Imaging in Animals: An Overview About the Today’s PossibiltiesPublication History
eingereicht: 20.2.2007
angenommen: 3.5.2007
Publication Date:
16 July 2007 (online)

Zusammenfassung
Die molekulare Bildgebung von Kleintieren hat in den letzten Jahren eine schnelle Entwicklung durchlaufen. Ein Grund dafür ist, dass verschiedene Forschungsgebiete davon profitieren können. Neben forschungstechnischen Gründen spielt dabei auch die Reduzierung der Tierzahl aus ethischen und finanziellen Gründen eine Rolle. Durch die nichtinvasiven Bildgebungsmethoden ist es möglich, ein Tier in einer Versuchsreihe mehrmals zu untersuchen, ohne dass das Tier getötet werden muss. Dadurch ist es möglich, im selben Tier die Entwicklung eines pathologischen Prozesses zu verfolgen. Die dabei angewendeten radiologischen Methoden, wie die Magnetresonanztomografie oder Computertomografie, aber auch die nuklearmedizinischen Methoden, wie die „Single Photon Emissions Computer Tomography” oder „Positronen Emissions Tomography,” weisen Nachteile auf. Bei den radiologischen Methoden ist die molekulare Aussage begrenzt, während die nuklearmedizinischen Methoden darunter leiden, dass es schwierig ist einen erhöhten Uptake einer anatomischen Lokalisation zuzuordnen. Das führt dazu, dass die Fusion der Methoden in vielen Fällen zu einem zusätzlichen Gewinn an Informationen führt. In dieser Übersichtsarbeit sollen die heutigen Möglichkeiten kombinierter Bildgebung und deren Vorteile aber auch die Nachteile aufgezeigt werden.
Abstract
Molecular imaging of small animals has made considerable progress in the last years. Various research fields are interested in imaging small animals due to the lower numbers of animals per experiment. This has advantages with respect to financial, ethical and research aspects. Non-invasive imaging allows examination of one animal several times during the same experiment. This makes it possible to follow a pathological process in the same animal over time. However, the radiological methods used such as magnetic resonance imaging or computed tomography as well as the nuclear medicine methods such as single photon emission computed tomography or positron emission tomography suffer from disadvantages. Molecular aspects are limited in the radiological methods while anatomical localization is difficult in nuclear medicine. The fusion of these methods leads to additional information. This review shows today’s possibilities with their advantages as well as disadvantages.
Key words
MR imaging - radionuclide imaging - SPECT - animal investigations - CT - PET CT
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Dr. Martin Behe
Klinik für Nuklearmedizin, Philipps-Universität Marburg
Baldingerstraße
35043 Marburg
Phone: ++49/64 21/2 86 28 08
Fax: ++49/64 21/2 86 28 99
Email: behe@staff.uni-marburg.de